An improved process is provided for producing bisphenol-A (BPA) comprising steps of (1) contacting benzene and a C
3
alkylating agent to produce an alkylation effluent comprising cumene; (2) oxidizing the cumene to produce the corresponding hydroperoxide; (3) cleaving the hydroperoxide to produce product comprising phenol and acetone; (4) reacting acetone with phenol to form a reaction product stream comprising crude bisphenol-A product; (5) distilling the reaction product stream, while sending downstream to a BPA-phenol adduct crystallization and purification step, the resulting concentrated BPA phenolic feed stream; (6) producing BPA-phenol adduct crystals by crystallization of the concentrated BPA phenolic feed stream; (7) separating the BPA-phenol adduct crystals by solid-liquid separation; (8) cracking a stream comprising at least a portion of said final mother liquor to recover a product; and (9) recovering and feeding the phenol product of step (8) to step (4) and/or step (7).
提供了一种改进的生产
双酚A(
BPA)的工艺,包括以下步骤:(1)将苯和C3烷基化剂接触,产生包含
叔丁基苯的烷基化废液;(2)将
叔丁基苯氧化,产生相应的
过氧化氢;(3)裂解
过氧化氢,产生含
酚和
丙酮的产物;(4)将
丙酮与
酚反应,形成含有粗
双酚A产物的反应产物流;(5)在将反应产物流蒸馏的同时,将所得的浓缩
BPA酚类进料流下发到
BPA-
酚加合物结晶和纯化步骤,得到浓缩的
BPA酚类进料流;(6)通过结晶浓缩的
BPA酚类进料流生产
BPA-
酚加合物晶体;(7)通过固液分离分离
BPA-
酚加合物晶体;(8)裂解至少包含最终母液部分的流以回收产物;(9)回收并将步骤(8)中的
酚产品馈送至步骤(4)和/或步骤(7)。